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Title: Large orbital polarization in nickelate-cuprate heterostructures by dimensional control of oxygen coordination

Abstract

Artificial heterostructures composed of dissimilar transition metal oxides provide unprecedented opportunities to create remarkable physical phenomena. Here, we report a means to deliberately control the orbital polarization in LaNiO 3 (LNO) through interfacing with SrCuO 2 (SCO), which has an infinite-layer structure for CuO 2. Dimensional control of SCO results in a planar-type (P-SCO) to chain-type (C-SCO) structure transition depending on the SCO thickness. This transition is exploited to induce either a NiO 5 pyramidal or a NiO 6 octahedral structure at the SCO/LNO interface. Consequently, a large change in the Ni d orbital occupation up to similar to 30% is achieved in P-SCO/LNO superlattices, whereas the Ni e g orbital splitting is negligible in C-SCO/LNO superlattices. The engineered oxygen coordination triggers a metal-to-insulator transition in SCO/LNO superlattices. Our results demonstrate that interfacial oxygen coordination engineering provides an effective means to manipulate the orbital configuration and associated physical properties, paving a pathway towards the advancement of oxide electronics.

Authors:
 [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [3];  [1];  [1];  [1]; ORCiD logo [1]; ORCiD logo [3];  [3];  [4]; ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Neutron Scattering Division
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Neutron Scattering Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division
OSTI Identifier:
1509586
Alternate Identifier(s):
OSTI ID: 1505162
Grant/Contract Number:  
AC02-06CH11357; AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 10; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Liao, Zhaoliang, Skoropata, Elizabeth, Freeland, J. W., Guo, Er-Jia, Desautels, Ryan, Gao, Xiang, Sohn, Changhee, Rastogi, Ankur, Ward, T. Zac, Zou, Tao, Charlton, Timothy, Fitzsimmons, Michael R., and Lee, Ho Nyung. Large orbital polarization in nickelate-cuprate heterostructures by dimensional control of oxygen coordination. United States: N. p., 2019. Web. doi:10.1038/s41467-019-08472-y.
Liao, Zhaoliang, Skoropata, Elizabeth, Freeland, J. W., Guo, Er-Jia, Desautels, Ryan, Gao, Xiang, Sohn, Changhee, Rastogi, Ankur, Ward, T. Zac, Zou, Tao, Charlton, Timothy, Fitzsimmons, Michael R., & Lee, Ho Nyung. Large orbital polarization in nickelate-cuprate heterostructures by dimensional control of oxygen coordination. United States. doi:10.1038/s41467-019-08472-y.
Liao, Zhaoliang, Skoropata, Elizabeth, Freeland, J. W., Guo, Er-Jia, Desautels, Ryan, Gao, Xiang, Sohn, Changhee, Rastogi, Ankur, Ward, T. Zac, Zou, Tao, Charlton, Timothy, Fitzsimmons, Michael R., and Lee, Ho Nyung. Mon . "Large orbital polarization in nickelate-cuprate heterostructures by dimensional control of oxygen coordination". United States. doi:10.1038/s41467-019-08472-y. https://www.osti.gov/servlets/purl/1509586.
@article{osti_1509586,
title = {Large orbital polarization in nickelate-cuprate heterostructures by dimensional control of oxygen coordination},
author = {Liao, Zhaoliang and Skoropata, Elizabeth and Freeland, J. W. and Guo, Er-Jia and Desautels, Ryan and Gao, Xiang and Sohn, Changhee and Rastogi, Ankur and Ward, T. Zac and Zou, Tao and Charlton, Timothy and Fitzsimmons, Michael R. and Lee, Ho Nyung},
abstractNote = {Artificial heterostructures composed of dissimilar transition metal oxides provide unprecedented opportunities to create remarkable physical phenomena. Here, we report a means to deliberately control the orbital polarization in LaNiO3 (LNO) through interfacing with SrCuO2 (SCO), which has an infinite-layer structure for CuO2. Dimensional control of SCO results in a planar-type (P-SCO) to chain-type (C-SCO) structure transition depending on the SCO thickness. This transition is exploited to induce either a NiO5 pyramidal or a NiO6 octahedral structure at the SCO/LNO interface. Consequently, a large change in the Ni d orbital occupation up to similar to 30% is achieved in P-SCO/LNO superlattices, whereas the Ni eg orbital splitting is negligible in C-SCO/LNO superlattices. The engineered oxygen coordination triggers a metal-to-insulator transition in SCO/LNO superlattices. Our results demonstrate that interfacial oxygen coordination engineering provides an effective means to manipulate the orbital configuration and associated physical properties, paving a pathway towards the advancement of oxide electronics.},
doi = {10.1038/s41467-019-08472-y},
journal = {Nature Communications},
number = 1,
volume = 10,
place = {United States},
year = {2019},
month = {2}
}

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